CN109129106B

CN109129106B - Tool holder and apparatus for polishing optical member

Info

Publication number: CN109129106B
Application number: CN201810630144.3A
Authority: CN
Inventors: G.施耐德; K.霍夫曼; H.布切瑙尔
Original assignee: Schneider & CoKg GmbH
Current assignee: Schneider & CoKg GmbH
Priority date: 2017-06-19
Filing date: 2018-06-19
Publication date: 2022-04-12
Anticipated expiration: 2038-06-19
Also published as: EP3418000A1; US11318578B2; CN109129106A; EP3418000B1; US20180361534A1

Abstract

The invention relates to a tool holder for a tool drive and to a device for polishing optical components, wherein the tool holder is coupled to the tool drive by means of a magnet and by means of a quick-connect device, and a preassembled assembly is formed from a tiltable tool holder and an associated support together with a bellows.

Description

Tool holder and apparatus for polishing optical member

Technical Field

The invention relates to a tool holder for a tool drive for polishing optical components, in particular spectacle lenses, by means of a rotatable tool. The invention further relates to a device for polishing an optical component, in particular an ophthalmic lens, by means of a rotatable tool, having a tool drive and an exchangeable tool holder for rotating the tool.

Background

DE 102004062319B 3 and DE 102014015052 a1 each disclose an apparatus for polishing optical components, in particular lenses, by means of a rotatable tool. The device has a tool drive and a tool holder. The tool receiver has a tool holder which is mounted so as to be tiltable via a ball head. The tool holder holds a replaceable polishing tool. Furthermore, the tool receiver has a bellows associated with the tool holder, which bellows follows the axial advance of the tool holder. Replacement of bellows and ball bearings when worn is difficult due to the small space normally within the working chamber.

Document EP 1473116 a1 discloses a receptacle for a film for the fine machining of an optically active surface on an ophthalmic lens. The receptacle has a base body which can be releasably attached to a tool shaft of a machining machine. The membrane is tiltably fixed to the substrate by means of adjoining bellows. The membrane can only be replaced together with the bellows. The bellows is held on the base body by a fixedly screwed holding ring, which results in costly replacement. In order to apply the machining pressure when machining the optically effective surface, the bellows is pressed by a pressing member.

Document EP 1698432 a2 discloses a similar receptacle for fine machining of the optically active face of an ophthalmic lens. The accommodating part is provided with an inclined accommodating section, and the polishing disk can be sleeved on the accommodating section. The holding section and the polishing disk can be axially fed by the input pressure element. The polishing disk is held in a rotationally fixed manner by the receiving section and is held axially between the receiving section and the plane to be machined only by the feed.

Disclosure of Invention

The object of the invention is to provide a tool holder for a tool drive for polishing optical components and a device for polishing optical components, in which the tool holder can be fixed and exchanged very easily, in particular even in a limited space of movement or directly in a working chamber.

According to one aspect of the invention, the object is achieved by a tool holder for a tool drive. The tool receiver is designed for magnetic coupling with the tool drive or an axially displaceable adjusting part of the tool drive, or for holding on the tool drive or on the axially displaceable adjusting part of the tool drive, and/or the tool receiver has at least one quick-action connection for fastening to the tool drive by means of the quick-action connection without tools, and/or the tool receiver is a preferably preassembled assembly with one, several or all wear parts and/or with a tiltable tool holder and a support for holding the tool holder tiltably.

The tool holder is designed for magnetic coupling with the tool drive or an axially movable adjusting part of the tool drive, or for being held on or in the tool drive. This enables a very simple and quick assembly and disassembly, in particular without tools.

The tool receiver or the tool holder or the support of the tool receiver is preferably axially coupled or held, in particular magnetically, to the tool drive or the adjusting element of the tool drive. This enables a very simple holding and positioning, in particular in the axial direction.

The proposed tool drive preferably has an axially displaceable adjusting element, in particular for axially adjusting or applying a pressure on the optical component to be machined, or the tool holder is designed for mechanical coupling to such an adjusting element. In an advantageous manner, a defined adjustment, pressure application and/or positioning of the tool can be achieved thereby.

According to a further, also independently implementable aspect of the invention, the tool holder is exchangeably fastened or fixable to the tool drive by means of a quick-action coupling, or the tool holder for fixing to the tool drive in a tool-free or detachable manner has a quick-action coupling for forming one or more quick-action couplings. This enables a very simple and quick assembly and disassembly, in particular without tools.

Preferably, the tool receiver is connected or connectable by means of a quick-action connection both to the tool drive, in particular to the head of the tool drive, and in particular to an axially displaceable adjusting part of the tool drive, in particular via a magnetic coupling. This achieves a particularly stable holding and/or positioning of the tool receptacle.

The tool is preferably axially inserted into the tool receiver or the tool holder of the tool receiver and can be pulled off axially from the tool receiver or the tool holder of the tool receiver for replacement. This enables a very simple assembly and disassembly as well as replacement of the tool.

The tool is preferably held in such a way that it can be mounted or fixed on the tool receiver or tool holder without tools and/or can be released from the tool receiver or tool holder or pulled away therefrom, in particular by applying an axial force.

The tool is preferably held on the tool receiver or its toolholder axially and/or radially and rotationally fixed, particularly preferably both axially and radially and rotationally fixed, and/or locked, or the tool receiver or the toolholder is designed to hold the tool on the tool receiver or its toolholder, preferably axially and/or radially and rotationally fixed, particularly preferably both axially and radially and rotationally fixed, and/or locked.

The axial holding force of the tool holder with the tool drive and/or the quick-connect device is particularly preferably greater than the axial force with which the tool is released from the tool holder, in particular greater than 50%, particularly preferably greater than 100%.

Particularly preferably, the tool can be mounted or fixed and/or can be released on the tool holder without tools on the one hand and/or the tool holder can be mounted or fixed and/or can be released on the tool drive on the other hand. Preferably, both the tool and the tool holder can be released by axial pulling or by applying an axial force, wherein a low force is preferably applied for releasing the tool, so that the tool can be exchanged when the tool holder is fixed on the tool drive. In an advantageous manner, the assembly and disassembly can thus be carried out particularly simply and quickly, wherein the tool, which is to be replaced particularly frequently, or the entire tool holder can only be replaced optionally.

According to a particularly preferred, also independently implementable aspect of the invention, the tool holder or the assembly of tool holders has one, a plurality of or all wear parts which are to be exchanged for maintenance and service in the tool drive or in the device for polishing optical tools having a tool drive and an exchangeable tool holder. The wear parts are in the case proposed in particular tilting support devices of the tool holder, such as tool holders and supports and/or bellows which can tiltably hold the tool holder. In this way, replacement and replacement can be carried out very simply and quickly, in particular without tools, when wear occurs.

According to a further, also independently implementable aspect of the invention, the tool receptacle is in particular a preassembled assembly with a tiltable tool holder and a support which tiltably holds the tool holder. This enables a very simple and quick assembly and disassembly, in particular without tools.

The assembly or the bearing device with the tool holder and the support is preferably designed to releasably hold the tool, in particular in a latching and/or axial manner and/or without tools, on the one hand, and/or to achieve a particularly magnetic coupling or holding on the adjusting part of the tool drive on the other hand. The tool is held, in particular axially adjustably, on the adjusting part indirectly via a component or a bearing.

Particularly preferably, the tool receiver comprises a tiltable tool holder and a support, which preferably holds the tool holder tiltably, and optionally a bellows assigned to the tool holder and/or a connection, in particular for fastening the bellows to the tool drive, and thus in particular forms a preassembled assembly. In this way, the replacement of parts is achieved in a simple and rapid manner, which parts must be replaced frequently due to wear, since the tool holder can be replaced very simply and rapidly, and in particular without tools, due to the magnetic holding and the quick connection.

The above-mentioned and the following features and characteristics of the invention can be combined in any desired manner, but can also be implemented independently of one another.

Drawings

Additional features, characteristics, advantages and characteristics of the invention are obtained from the following description of preferred embodiments of the invention, the description of which is given with reference to the accompanying drawings. In the drawings:

FIG. 1 shows a schematic side view of the apparatus according to the proposal with a tool for polishing an optical component in an axially extended state;

fig. 2 shows a schematic longitudinal sectional view of the device;

fig. 3 shows a detail according to fig. 2 in the region of the tool holder without the tool;

fig. 4 shows a detail corresponding to fig. 3 in the region of the tool holder, but in an axially retracted state;

fig. 5 shows an oblique perspective view of the device with a tool in the region of the tool holder;

FIG. 6 shows a schematic cross-sectional view taken along section line VI-VI of FIG. 5; and

fig. 7 shows a partial plan view of the coupling piece of the tool holder.

Detailed Description

Fig. 1 shows a side view of a proposed device 1 for polishing optical components, not shown, in particular lenses, such as spectacle lenses, mirror surfaces or the like, which are particularly preferably made of plastic or glass, by means of a rotatable tool 2. The apparatus 1 is also referred to as a polishing spindle.

The device 1 has a tool drive 3 and a tool holder 4.

The tool 2 is releasably or detachably mounted on the tool holder 4. The tool 2 is in particular axially inserted or clipped onto the tool holder 4 and can be released again from the tool holder 4 by axial pulling.

The tool holder 4 is preferably designed as a preassembled component which can be exchanged very simply and quickly, in particular without tools.

The tool drive 3 preferably has a rotatable head 5, and the tool holder 4 is fixed or fixable on the head 5.

The tool drive 3 preferably has a housing 6 and a shaft 7 rotatably mounted in the housing. The shaft 7, which is preferably of multi-part design, is coupled to the head 5 in a rotationally fixed manner and, for the purpose of rotational driving, preferably has a pulley 8 or other drive element in the embodiment shown. However, it is also possible for the drive motor to be integrated, for example, in the tool drive 3 or to be coupled to the shaft 7 in another way.

The head 5 and thus the tool holder 4 are preferably axially adjustable. For this purpose, in the exemplary embodiment shown, the shaft 7 is preferably adjustable axially relative to the housing 6, together with the head 5. This is used in particular for the initial or rough feed of the tool 2 to the optical component (not shown) to be machined.

Fig. 2 shows a schematic longitudinal sectional view of the device 1.

The tool drive 3 preferably has an adjusting element 9 and an associated actuating drive 10.

The adjusting element 9 is axially displaceable, in particular axially displaceable relative to the shaft 7 and/or the head 5, and/or can be adjusted very easily relative to the shaft 7 and/or the head 5, in particular by means of the actuating drive 10.

The axial adjustability of the adjusting element 9 serves in particular to axially pretension or to continuously bear the tool 2 against the optical component to be machined. In the extended position shown in fig. 2, the adjusting element 9 is particularly preferably pretensioned or moved by the actuating drive 10 or by other means.

The adjusting element 9 is particularly preferably moved or pretensioned in the extended position by pneumatic action of the actuating drive 10 and axially forward or (further) beyond the head 5 and toward the optical component.

The tool 2, the tool holder 4, the head 5, the shaft 7 and/or the pulley 8 and, if appropriate, the adjusting element 9 are rotatable about a longitudinal axis or axis of rotation R. The rotation about the axis R is effected during the machining by a not shown rotary drive, which here acts on the belt pulley 8.

In the embodiment shown, the adjusting element 9 preferably rotates together with the shaft 7 and the head 5. Alternatively or preferably, the adjusting element 9 can be twisted relative to the head 5 or relative to the shaft 7 and/or is not used for torque transmission on the tool 2.

Fig. 3 shows a partial enlargement of the front or tool-side region of the device 1 according to fig. 2, without the tool 2 at present.

The tool receiver 4 has a preferably tiltable tool holder 11 for holding the replaceable tool 2.

The tool receiver 4 also preferably has a support 12 which tiltably holds the tool holder 11. In the exemplary embodiment shown, the support 12 preferably has a support head or support head section 13, in particular in the form of balls, on which support head or support head section 13 a support 14 is tiltably arranged, which supports the tool holder 11. This form of bearing does not transmit torque. However, other design options are also possible here.

The tool holder 11 is preferably mounted in the form of a ball bearing tiltably on the support 12 or in relation thereto.

The tool receiver 4 or the tool holder 11 or the support 12 is preferably mechanically and/or magnetically coupled to the tool drive 3 or the adjusting means 9 or is held thereon, in particular axially. In the exemplary embodiment shown, the adjusting means 9 preferably has a holding means 15 for holding the support element 12 at its free end. The support 12 can be mounted or mounted on the holder 15.

The holder 15 is preferably connected to the adjuster 9 in a non-releasable or fixed manner.

The assembly or the support device with the tool holder 11 and the support 12 is preferably designed to hold the tool 2, in particular tiltable, on the tool drive 3 or on the adjusting element 9 of the tool drive. The component or the bearing is then designed in particular to hold the tool 2 on the one hand and preferably to form a mechanical or magnetic connection with the tool drive 3 or the adjusting means 9 or the holding means 15 on the other hand.

In order to achieve a magnetic connection or holding, in the exemplary embodiment shown, the tool drive 3 or its actuator 9 or its holder 15 preferably has a magnet 16 or alternatively a magnetizable material, and the tool holder 4 or the tool holder 11 or the support 12 has a corresponding holding element 17 made of magnetizable material or a magnet.

In the embodiment shown, the magnet 16 is designed as a permanent magnet and is preferably integrated or cast or glued in the holder 15. Other structural designs are possible.

In the embodiment shown, the holding element 17 is preferably integrated, plugged, glued or pressed into the support 12.

The magnet 16 and the holding element 17 can also be interchanged, if necessary, that is to say the magnet 16 is arranged on the support 12 and conversely the holding element 17 on the holder 15.

The magnet 16 and the holding element 17 interacting therewith are preferably arranged on the end faces of the holder 15 and the support 12 facing one another in the assembled state and/or abut one another in the assembled state. This facilitates a strong magnetic connection force and a large magnetic holding force.

The mechanical or magnetic coupling or holding force is preferably greater than 10N, in particular greater than 20N, particularly preferably greater than 30N and/or less than 150N, preferably less than 100N, in particular less than 80N.

The magnetic connection or holding is in particular only effective in the axial direction. Alternatively or additionally, however, this may also act radially, for example in the form of a ring magnet.

The support 12 can preferably be pushed onto or otherwise connected to the adjusting means 19 and the holding means 15, in particular such that the support 12 is guided or held radially. This is simplified or achieved in the exemplary embodiment shown by a preferably cap-shaped or pot-shaped design and/or by holding arms which are distributed radially in the circumferential direction, for example.

It should be noted here that the magnetic coupling or connection of the tool holder 4 or its support 12 to the adjusting means 9 or its holder 15 is preferred, but other, in particular mechanical, designs are also possible. The tool holder 4 or the support 12 and the adjusting element 9 or the holding element 15 can also be connected/connectable or coupled/couplable, in particular axially, for example by means of a snap-on or the like. However, the tool receiver 4 or the support 12 and the adjusting element 9 or the holder 15 can preferably be connected to or disconnected from one another without tools, in particular by applying an axial force.

The tool holder 4 preferably has a bellows 18 and/or a connection 19.

The bellows 18 is in particular assigned to the tool holder 11 and is preferably fastened to the tool holder 11 at the tool-side end of the bellows and optionally fastened thereto by a fastening element, not shown, such as a ring, a collar or the like.

The bellows 18 is preferably held or fixed to the tool drive 3 or the head 5 or the connecting piece 19 by a further tool-receiving end of the bellows. In the embodiment shown, the bellows 18 is preferably fixed, fastened or held on the connection piece 19 by means of a fastener 20.

The connecting element 19 is preferably fixed or fixable in a rotationally fixed manner on the tool drive 3 or the head 5 or the shaft 7.

The bellows 18 in the exemplary embodiment shown serves preferably to transmit the torque or rotation of the tool drive 3 or of the shaft 7 or of the head 5 to the tool holder 11 and thus ultimately to the tool 2 which rotates during the polishing process. However, alternative designs are also possible here. Alternatively or additionally, for example, the adjuster 9 may also transmit a torque to the toolholder 11.

The bellows 18 can follow or eliminate the axial feed of the adjusting element 9 and thus of the tool holder 11 relative to the tool drive 3 or the head 5 or the shaft 7, and/or serve to protect the tiltable mounting of the tool holder 11 and/or the axially movable mounting of the adjusting element 9, in particular, from soiling or other influences.

The tool receiver 4 or the assembly has preferably one, more or all wear parts, such as an inclined bearing or tool holder 11, a support 12, a bearing head 13 and/or a support element 14, and/or all wear parts, such as a bellows 18 and/or other support elements, in particular the equipment 1 or the polishing spindle, which are usually to be replaced during maintenance and servicing. This allows particularly simple replacement or replacement, in particular during maintenance or servicing.

Fig. 4 shows the tool receiver 4 and the tool holder 11 and the adjusting element 9 in an axially retracted or retracted state in a sectional view corresponding to fig. 3. In this state, the bellows 18 is axially compressed and/or ensures that the toolholder 11 is not tilted and supports or locks the toolholder 11.

In the illustrated embodiment, the connecting piece 19 preferably has a supporting section 19A which preferably extends axially in the direction of the toolholder 11 and/or surrounds the adjusting piece 9 and the bearing 12, in order to be able to bear, in particular by way of an axial free end of the supporting section, which optionally can be provided with a bearing section 19B, in the retracted state, against the side of the toolholder 11 facing away from the tool 2 and/or against the bearing element 14 and thus ensure that the toolholder 11 is not tilted and the toolholder 11 is locked in the retracted state, as shown in fig. 4.

In the retracted state, the tool is preferably replaced. This can be achieved in particular automatically by axially pulling the used tool 2 apart and subsequently inserting a new, further and unused tool 2 again.

It is particularly preferred that the tool 2 is latched or plugged onto the tool holder 11 and/or is connected to the tool holder 11 in a rotationally fixed manner.

The tool 2 is preferably axially held or fixed, in particular snapped, on the tool holder 11. It is particularly preferred that the tool 2 can be released without tools, in particular by axial pulling out or application of an axial force.

The tool holder 11 preferably has a projection 11A which can engage in a corresponding recess 2A of the tool 2. Alternatively or additionally, the tool holder 11 may have a recess 11B, in which recess 11B a corresponding engagement 2B of the tool 2 may be embedded.

In the embodiment shown, the tool holder 11 has protrusions 11A and recesses 11B alternating in the circumferential direction, which engage with corresponding recesses 2A and engagement members 2B of the tool 2, as shown in fig. 5. However, alternative designs are also possible here.

A positive or latching, in particular axial and/or rotationally fixed holding of the tool 2 on the tool holder 11 or the tool receiver 4 can preferably be achieved by the projections 11A and/or the recesses 11B and the engagement therein. However, alternative designs are also possible here. For example, the tool 2 may have a flexible arm that grips the tool holder 11 accordingly.

The connecting piece 19 preferably has a holding section 19C, in particular in the form of a flange, for fastening and bearing on the tool drive 3 or the head 5.

The tool receiver 4 or the connecting piece 19 or the holding section 19C is connected or connectable or couplable, in particular rotationally fixed, to the tool drive 3 or the head 5 in order to achieve the desired torque transmission to the tool holder 11 or the tool 2, in this case to the tool holder 11 via the connecting piece 19 and the bellows 18.

The connecting piece 19 is preferably of one-piece design and/or made of plastic.

The device 1 or the tool drive 3 or the tool holder 4 preferably has at least one quick-action connection 21 for releasably fastening the tool holder 4 to the tool drive 3, in particular without tools.

In the exemplary embodiment shown, the tool receiver 4 or the connecting piece 19 is fixed or fixable to the head 5 by means of at least one quick-connect device 21. In this case, in particular, a plurality of quick-connection devices 21 are provided, which are distributed over the outer circumference of the holding section 19C, as can be seen in the perspective view of fig. 5, which shows the tool-side end of the device 1 with the tool 2 and the tool holder 4.

The preferred construction of the quick-connect means 21 is explained in detail below. All quick-connection devices 21 are preferably constructed and embodied identically, but they can also be designed differently.

A "quick-connection" is preferably understood here to mean a connection between two parts, in particular a connection between the tool drive 3 on the one hand and the tool holder 4 on the other hand, which is in particular locked and/or can be released without tools and which achieves sufficient holding and fixing for normal operation, i.e. polishing.

The quick-connection means 21 are particularly preferably set up and released by applying an axial force and/or the quick-connection means 21 are formed by axially inserting the tool holder 4 on the tool drive 3 and released by axial pulling apart.

In order to produce or form the quick-connection device 21, one or more quick-connections are preferably arranged or formed on the tool drive 3 and/or on the tool holder 4, which quick-connections are preferably in mechanical or magnetic contact and/or engage with each other, in particular when producing the quick-connection device 21.

In the exemplary embodiment shown, at least one spring arm 22 is arranged or formed on the tool receiver 4 or the connecting piece 19 or the holding section 19C as a quick-action connection. In order to form the quick-connect device 21, a plurality of spring arms 22 are preferably provided, which spring arms 22 project into recesses 23, in particular of the opposite sides, in particular in the form of two pairs of opposite sides, as shown in fig. 7, which partially shows only the retaining section 19C of the tool holder 4.

In the exemplary embodiment shown, at least one connecting section 24 is preferably arranged or formed on the tool drive 3 or the head 5 as a quick-action connection. The connecting section 24 is preferably spherically designed and/or axially undercut. Particularly preferably, the connecting piece 24 is screwed or otherwise seated in the head 5 by means of a seat.

In the production of the quick-connect device 21, the connecting section 24 is particularly preferably snapped into and/or held in the recess 23 by one or more spring arms 22, as shown in fig. 5 and 6. Fig. 6 shows a sectional view along section line VI-VI in fig. 5, in order to clarify the engagement and engagement during the production of the quick-coupling device 21, so that the quick-coupling device 21 holds or fixes the tool holder 4, in particular, in the axial direction on the tool drive 3.

In the exemplary embodiment shown, the quick-action connection or spring arm 22 on the receiving side is preferably formed on or integrally formed with the connecting element 19 or its holding section 19C, in particular. But other designs are also possible.

In the exemplary embodiment shown, the spring arms 22 preferably extend at least substantially tangentially and/or in pairs parallel and/or opposite each other, in particular such that the counterpart or connecting section 24 is held or centered in the preferred middle between the free ends of the spring arms 22 when the quick-connect device 21 is set up.

The quick-action coupling 21 is preferably designed such that a mutual centering of the parts to be connected, in this case the tool drive 3, relative to the tool holder 4 or the connecting part 19 relative to the head 5, is achieved.

In order to establish the quick-connection means 21 (by axial insertion and co-extrusion of the tool drive 3 and the tool holder 4) and/or to release the quick-connection means 21 (by axial pulling apart or lifting of the tool holder 4 and the tool drive 3), the spring arms 22 can each preferably be elastic or spring-loaded or laterally offset, in particular in order to achieve a displacement of the connecting section 24 into the recess 23 or out of the recess when a corresponding force acting in this axial direction is applied.

The force for releasing one or all of the quick-connection means 21 and/or the force for establishing one or all of the quick-connections is preferably greater than the magnetic coupling or holding force, in particular greater than 50% or more than 100%, and/or preferably greater than 50N, in particular greater than 20N, particularly preferably greater than 80N.

The quick-action connection 21 is characterized in particular in that the quick-action connection is established and released without tools and in that a latching or latching connection is realized. Alternatively or additionally, a magnetic connection may also be made. The magnetic connection and holding of the tool holder 11 or the support 12 on the tool drive 3 or the adjusting part 9 or the holding part 15 can be considered in particular in the sense described or also as or to be understood as a second or additional quick-connection device 21. The proposed device 1 then has in particular two different quick-coupling means 21, and/or the tool holder 4 is designed for establishing two different quick-coupling means 21.

Different or all of the connecting means 21 or all of the quick-connect means 21 can preferably be set up and/or released simultaneously. Alternatively, it is also possible for precisely different quick-connection means 21 to be set up and/or released one after the other or in succession. This is advantageous in that the required force does not need to be too high.

The different quick-connect means may also be interchangeable with each other and/or be replaced or supplemented by other forms of elements. For example, the spring arm 22 can also be arranged on the tool drive 3 or the head 5, and the connecting section 24 can be arranged on the tool receiver 4 or the connecting piece 19.

Furthermore, the quick-connection means 21 between the head 5 and the tool holder 4 or the connecting piece 19 can also be designed to be magnetically held or coupled.

In the exemplary embodiment shown, the tool drive 3 or the head 5 or the shaft 7 preferably has a centering section 25 for centering the tool holder 4 or the connecting piece 19. The centering section 25 is preferably embedded in the axial direction in the holding section 19C or the support section 19A or the connecting piece 19. But other designs are also possible.

In the exemplary embodiment shown, the quick-connection means 21 are preferably used not only for the axial fixing and holding of the tool holder 4, but also in particular for the rotationally fixed coupling. However, it is also possible to disconnect the rotational coupling and to form or use the quick-connection device 21 only for axial holding and fixing, while the rotational coupling is effected independently thereof.

The force of the magnetic connection of the tool holder 11 or the support 12 to the tool drive 3 and/or the axial holding force of the quick-action connection 21 is preferably greater than the force for releasing the tool 2 from the tool holder 11, in particular greater than 50%, particularly preferably greater than 100%. This ensures a secure fixing and holding even when an especially automatic loosening, especially an axial pulling-off or a replacement of the tool 2, is carried out.

The tool receiver 4 comprises as components preferably a tool holder 11, a support 12, a support head 13, a support element 14, a bellows 18, a connection 19, a fastener 20 and/or one or more quick connections, such as a holding element 17 and/or a spring arm 22.

The bearing head 13 is preferably made of metal and the bearing element 14 is preferably made of plastic, so that a preferably lubricant-free tilting bearing is achieved. However, such a tilting bearing is subject to a certain wear, like the bellows 18, and therefore needs to be replaced or replaced after a corresponding use or after a corresponding wear. This can be achieved by the tool holder 4, which is designed as an assembly according to the proposal, and/or by the fastening, which is achieved by means of one or more quick-connection devices 21 according to the proposal, or by magnetic coupling or holding, which is particularly easy, quick and in particular tool-free.

The specific features and characteristics of the invention may be independent of each other but may also be implemented in any combination.

List of reference numerals

1 apparatus

2 cutting tool

2A recess

2B engaging member

3 tool driving device

4 tool receiving part

5 head part

6 casing

7 shaft

8 belt pulley

9 adjusting part

10 servo driving device

11 tool holder

11A projection

11B recess

12 support member

13 support head

14 support element

15 holder

16 magnet

17 holding element

18 corrugated pipe

19 connecting piece

19A support section

19B abutting section

19C holding section

20 fastener

21 quick connecting device

22 spring arm

23 gap

24 connecting segment

25 centering segment

R axis of rotation

Claims

1. Tool holder (4) for a tool drive (3) for polishing optical components with a rotatable tool (2), wherein the tool holder (4) has a tool holder (11) for holding a replaceable tool (2), a connecting piece (19) that can be fixed to the tool drive (3), and a bellows (18), wherein the bellows (18) is fixed with its tool-side end to the tool holder (11) and with its end remote from the tool to the connecting piece (19),

it is characterized in that the preparation method is characterized in that,

the tool holder (11) is designed for cutting a tool (2) and the tool holder (11) has a holding element (17) made of a magnet or a magnetizable material for magnetic coupling with an axially displaceable adjusting element (9) of the tool drive (3).

2. Tool holder (4) for a tool drive (3) for polishing optical components with a rotatable tool (2), wherein the tool holder (4) has a tool holder (11) for holding a replaceable tool (2), a connecting piece (19) that can be fixed to the tool drive (3), and a bellows (18), wherein the bellows (18) is fixed with its tool-side end to the tool holder (11) and with its end remote from the tool to the connecting piece (19),

characterized in that the tool holder (11) is designed for a cutting tool (2) and the connecting element (19) has a flange-shaped holding section (19C), which holding section (19C) has at least one quick-action connection element for releasable fastening to the tool drive (3) without tools by means of a quick-action connection (21).

3. Tool receiving portion according to claim 2, characterized in that the tool holder (11) has a holding element (17) made of a magnet or a magnetizable material for magnetic coupling or holding with an axially feedable adjustment piece (9) of the tool drive (3).

4. Tool receiving portion according to claim 2 or 3, wherein the tool holder (11) is axially adjustable relative to the quick coupling.

5. Tool receiving portion according to one of claims 1 to 3, wherein the tool holders (11) are tiltable.

6. Tool receiving portion according to claim 5, characterized in that the tool receiving portion (4) has a support (12) tiltably holding the tool holder (11).

7. Tool holder according to claim 2, characterized in that the connecting piece (19) of the tool holder (4) can be connected to the head (5) of the tool drive (3) via the quick-connect device (21) and the support piece (12) of the tool holder (4) can be connected to an axially displaceable adjusting piece (9) of the tool drive (3).

8. Tool holder according to claim 6, characterized in that the support element (12) is designed for magnetic coupling with the axially movable adjusting element (9) of the tool drive (3) or is held on the axially movable adjusting element (9) of the tool drive (3).

9. Tool receiving portion according to one of claims 1 to 3, characterized in that the bellows (18) is coupled to the tool holder (11) in a rotationally fixed manner.

10. Tool receiving portion according to claim 2 or 3, wherein the tool receiving portion (4) has one or more spring arms (22) as quick-connect members.

11. Tool holder according to claim 2 or 3, characterized in that the tool holder (4) is designed for establishing a plurality of quick-connect means (21).

12. Tool receiving portion according to one of claims 1 to 3, wherein the optical component is an ophthalmic lens.

13. Tool receiving portion according to claim 11, wherein the quick coupling means (21) are distributed in the circumferential direction.

14. An apparatus (1) for polishing optical components with a rotatable tool (2), the apparatus (1) having a tool drive (3) and a tool holder (4) which is exchangeably fastened to the tool drive (3) for rotating the tool (2), characterized in that the tool drive (3) has an axially movable adjusting element (9) and the tool holder (4) is designed according to one of claims 1 to 13.

15. Device according to claim 14, characterized in that the tool receiver (4) is magnetically coupled to the axially advanceable adjusting element (9).

16. Apparatus according to claim 15, wherein said support member (12) of said toolholder (11) is magnetically coupled with said axially feedable adjustment member (9).

17. Apparatus according to one of claims 14 to 16, wherein the tool holder (4) is replaceably fastened to the tool drive (3) by means of a quick-connect device (21).

18. The device according to claim 17, characterized in that the tool holder (4) is replaceably fastened to the tool drive (3) by means of a plurality of quick-coupling means (21) distributed over the circumference.

19. Device according to claim 17, characterized in that the quick-connection means (21) hold the tool holder (4) in a latching manner and/or can be released by axial pulling apart or by applying an axial force.

20. Device according to claim 17, characterized in that the connecting piece (19) of the tool holder (4) is connected or coupled to the head (5) of the tool drive (3) via the quick-connection device (21).

21. Apparatus according to one of claims 14 to 16, characterized in that the tool drive (3) or the axially movable adjusting part (9) of the tool drive (3) has a magnet (16) for axially holding the tool holder (4) or the support part (12) of the tool holder (4).

22. Device according to claim 17, characterized in that the quick-coupling means (21) have at least one undercut or spherical coupling section (24).

23. Device according to claim 17, characterized in that the quick coupling means (21) can be released without tools.

24. Device according to claim 17, characterized in that the quick-connection means (21) are configured such that the quick-connection means (21) break when the axial force exceeds a limit.

25. Device according to claim 17, characterized in that the magnetic coupling force of the tool holder (11) to the tool drive (3) or to an axially displaceable adjusting element (9) of the tool drive (3) and/or the axial holding force of the quick-action coupling (21) for fastening the tool holder (4) to the tool drive (3) is greater than the axial force for releasing the tool (2) from the tool holder (11) or the tool holder (4).

26. Apparatus according to claim 17, characterized in that the quick-coupling means (21) provide an axial holding force of the tool holder (4) on the tool drive (3) which is more than 50% greater than the axial force with which the tool (2) is released from the tool holder (11) or the tool holder (4).

27. Apparatus according to claim 17, characterized in that the quick-coupling means (21) provide that the axial holding force with which the tool holder (4) is fixed to the tool drive (3) is more than 100% greater than the axial force with which the tool (2) is released from the tool holder (11) or the tool holder (4).